First of all, it’s perfectly legal. There are no laws ruling who people can date. There are also laws ruling who people may have sex with. You are too young to be dating If you think that dating someone is just the same thing as having sex with them. In general, it is not in favor of the law in Oregon to have sex with anyone who is not enough age 18. By the way, ‘sex.’ in this framework, it is not just intercourse. It refers to all sexual contact.
After all, there is an exception to the age rule: sex between them is legal – as long as it’s consensual, of course when both partners are over age 15, and they are less than three years different in age. So your partner and you are good under the law – and almost certainly always have been. Just be sure to get true consent for all sexual conduct and show each other respect. (And let’s use condoms if you have intercourse if you don’t want to be a parent at 17).